A lightweight yet sound-proof honeycomb acoustic metamaterial

Ni Sui, Xiang Yan, Tai Yun Huang, Jun Xu, Fuh Gwo Yuan, Yun Jing

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Abstract

In this letter, a class of honeycomb acoustic metamaterial possessing lightweight and yet sound-proof properties is designed, theoretically proven, and then experimentally verified. It is here reported that the proposed metamaterial having a remarkably small mass per unit area at 1.3 kg/m2 can achieve low frequency (<500 Hz) sound transmission loss (STL) consistently greater than 45 dB. Furthermore, the sandwich panel which incorporates the honeycomb metamaterial as the core material yields a STL that is consistently greater than 50 dB at low frequencies. The proposed metamaterial is promising for constructing structures that are simultaneously strong, lightweight, and sound-proof.

Original languageEnglish (US)
Article number171905
JournalApplied Physics Letters
Volume106
Issue number17
DOIs
StatePublished - Apr 27 2015

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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